you are not logged in | login or join us

Shannon Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
26.4 26.8 25.1 21.6 18.5 15.8 14.9 15.4 16.4 18.6 22.2 24.4 20.5
Mean Min (°C)
12.6 13.4 12.4 10.8 9.2 7.5 6.4 6.8 7.2 8.1 10.1 11.3 9.7
Mean Rain (mm)
18.9 15.8 31.6 70.4 130.9 167.6 173.2 150.7 134.0 78.3 55.0 31.2 1051.4
Median Rain (mm)
10.8 10.8 19.4 43.4 116.4 150.6 143.6 150.9 132.8 63.2 45.4 15.5 994.4
Mean Rain Days
7.7 7.1 8.9 14.5 18.6 19.8 22.1 19.6 18.6 17.9 13.1 9.7 157.9

Shannon Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
41.0 39.0 41.0 33.1 29.0 22.0 21.0 24.0 28.0 30.3 38.0 41.0 41.0
Low Max (°C)
16.5 17.0 11.0 13.0 9.6 8.8 9.7 8.0 10.0 12.0 13.0 15.0 8.0
High Min (°C)
21.0 24.0 23.0 19.0 19.0 14.0 13.0 13.8 14.0 16.5 20.0 21.0 24.0
Low Min (°C)
4.0 6.0 3.0 2.0 0.0 -2.0 -1.0 0.0 1.0 1.0 1.0 3.0 -2.0
High Rain (mm)
27.0 31.0 35.0 62.0 80.0 46.0 47.0 36.0 38.0 50.0 32.0 42.6 80.0

Shannon Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
27.9 28.3 26.9 24.6 19.9 16.5 16.0 17.5 17.8 20.3 24.5 26.9 21.1
Low Mn. Max (°C)
24.1 25.6 22.3 18.6 17.3 14.6 14.0 14.1 14.5 16.4 18.7 20.9 19.6
High Mn. Min (°C)
13.8 15.4 14.7 12.1 11.6 9.1 7.5 8.3 8.3 9.4 12.2 13.2 10.4
Low Mn. Min (°C)
11.4 11.9 10.9 8.6 7.5 5.0 5.1 5.3 5.7 6.8 8.4 9.5 9.1
High Rain (mm)
70.0 36.4 100.8 183.0 208.6 269.0 278.8 206.2 203.4 132.6 151.4 83.2 1357.4
Low Rain (mm)
3.2 2.8 1.0 8.4 66.8 70.2 68.6 31.4 2.4 34.0 15.4 5.0 520.6

Shannon Annual Temperatures & Rainfall

SHANNON

Mean daily minimum temp
Mean daily maximum temp
Highest/lowest on record
Highest/lowest on record
Mean monthly rainfall

Shannon Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.2 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.4
≥ 35°C
1.6 1.9 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 1.1 5.6
≥ 30°C
7.4 7.8 5.3 1.0 0.0 0.0 0.0 0.0 0.0 0.2 2.5 4.8 25.7
≤ 2°C
0.0 0.0 0.0 0.1 0.3 1.2 2.7 1.1 0.9 0.3 0.1 0.0 5.8
≤ 0°C
0.0 0.0 0.0 0.0 0.1 0.3 0.6 0.1 0.0 0.0 0.0 0.0 0.8

Shannon 'per Week' Values (14th/86th Percentiles)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
32.0 33.0 30.9 26.0 21.3 18.0 17.0 18.0 19.0 22.0 27.0 30.6 27.0
Low Max
21.0 21.4 19.0 17.0 15.0 13.0 13.0 13.0 13.2 15.0 17.4 19.0 15.0
High Min
16.0 17.0 16.0 14.0 13.0 10.5 9.0 10.0 10.0 11.0 13.0 15.0 14.0
Low Min
9.0 9.3 9.0 7.0 6.0 4.0 3.0 4.0 4.0 5.0 6.0 8.0 5.0

Shannon Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
14 15 16 15 15 15 14 15 15 15 15 15 14.8
Earliest Entry
1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1996 1996
Latest Entry
2012 2012 2012 2012 2013 2013 2011 2013 2013 2011 2012 2011 2013
Years of Maxima
14 15 16 15 15 15 14 15 15 15 15 15 14.8
Earliest Entry
1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1996 1996
Latest Entry
2012 2012 2012 2012 2013 2013 2011 2013 2013 2011 2012 2011 2013
Years of Rainfall
14 15 15 15 15 15 14 15 15 15 15 15 14.7
Earliest Entry
1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1996 1996
Latest Entry
2012 2012 2012 2012 2013 2013 2011 2013 2013 2011 2012 2011 2013

Station Details

SHANNON
Southwest, Western Australia
34.5683°S 116.3367°E 210m AMSL
Commenced 1996

Site search


Enter a postcode or town name for local weather, or text to search the site. » advanced search

Southwest WA heats up before a soaking

16:39 EST The mercury soared in the nation's southwest today with Perth recording its hottest September day on record, however heavy rain and cooler temperatures will arrive on Sunday.

Help with Weatherzone